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cmake_minimum_required(VERSION 3.5)
project(basisu_encoder_js)
# Toggle Zstd support for KTX2 (ON by default).
option(KTX2_ZSTANDARD "Enable KTX2 Zstandard support" TRUE)
message("KTX2_ZSTANDARD=${KTX2_ZSTANDARD}")
# Only for Emscripten builds.
if(EMSCRIPTEN)
set(CMAKE_CXX_STANDARD 17)
# ---------- Pick config once (single-config generators) ----------
# Supports: Release (default), Debug, SAN
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE "Release")
endif()
string(TOUPPER "${CMAKE_BUILD_TYPE}" BUILD_MODE)
# Per-config compile/link flags
set(CONFIG_CFLAGS "")
set(CONFIG_DEFS "")
set(CONFIG_LINK "")
if(BUILD_MODE STREQUAL "RELEASE")
set(CONFIG_CFLAGS "-O3")
set(CONFIG_DEFS "NDEBUG")
set(CONFIG_LINK "-O3 -s ASSERTIONS=0")
elseif(BUILD_MODE STREQUAL "DEBUG")
set(CONFIG_CFLAGS "-g -O0")
set(CONFIG_DEFS "DEBUG")
set(CONFIG_LINK "-g -s ASSERTIONS=2")
elseif(BUILD_MODE STREQUAL "SAN")
set(CONFIG_CFLAGS "-g -O1 -fsanitize=undefined -fsanitize=address")
set(CONFIG_DEFS "DEBUG")
set(CONFIG_LINK "-g -s ASSERTIONS=2 -fsanitize=undefined -fsanitize=address")
else()
message(WARNING "Unknown CMAKE_BUILD_TYPE='${CMAKE_BUILD_TYPE}', defaulting to Release-like flags.")
set(CONFIG_CFLAGS "-O3")
set(CONFIG_DEFS "NDEBUG")
set(CONFIG_LINK "-O3 -s ASSERTIONS=0")
endif()
# ---------- Sources (shared) ----------
set(SRC_LIST
../transcoder/basis_wrappers.cpp
../../transcoder/basisu_transcoder.cpp
../../encoder/basisu_backend.cpp
../../encoder/basisu_basis_file.cpp
../../encoder/basisu_comp.cpp
../../encoder/basisu_enc.cpp
../../encoder/basisu_etc.cpp
../../encoder/basisu_frontend.cpp
../../encoder/basisu_gpu_texture.cpp
../../encoder/basisu_pvrtc1_4.cpp
../../encoder/basisu_resampler.cpp
../../encoder/basisu_resample_filters.cpp
../../encoder/basisu_ssim.cpp
../../encoder/basisu_uastc_enc.cpp
../../encoder/basisu_bc7enc.cpp
../../encoder/basisu_kernels_sse.cpp
../../encoder/basisu_opencl.cpp
../../encoder/pvpngreader.cpp
../../encoder/jpgd.cpp
../../encoder/3rdparty/android_astc_decomp.cpp
../../encoder/basisu_uastc_hdr_4x4_enc.cpp
../../encoder/basisu_astc_hdr_6x6_enc.cpp
../../encoder/basisu_astc_hdr_common.cpp
../../encoder/basisu_astc_ldr_common.cpp
../../encoder/basisu_astc_ldr_encode.cpp
../../encoder/3rdparty/tinyexr.cpp
)
if(KTX2_ZSTANDARD)
list(APPEND SRC_LIST ../../zstd/zstd.c)
set(ZSTD_DEFINITION BASISD_SUPPORT_KTX2_ZSTD=1)
else()
set(ZSTD_DEFINITION BASISD_SUPPORT_KTX2_ZSTD=0)
endif()
# Common preprocessor defines (same as your original)
set(COMMON_DEFS
BASISD_SUPPORT_UASTC=1
BASISD_SUPPORT_BC7=1
BASISD_SUPPORT_ATC=0
BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY=0
BASISD_SUPPORT_PVRTC2=0
BASISD_SUPPORT_FXT1=0
BASISD_SUPPORT_ETC2_EAC_RG11=0
BASISU_SUPPORT_ENCODING=1
BASISU_SUPPORT_SSE=0
BASISD_SUPPORT_XUASTC=1
${ZSTD_DEFINITION}
)
# Base link flags
set(LINK_BASE "--bind -s ALLOW_MEMORY_GROWTH=1 -s INITIAL_MEMORY=536870912 -s STACK_SIZE=2097152 -s MODULARIZE=1 -s EXPORT_NAME=BASIS -s EXPORTED_RUNTIME_METHODS=['HEAP8']")
set(LINK_THREADS "-s USE_PTHREADS=1 -s PTHREAD_POOL_SIZE=18 -s ENVIRONMENT=web,worker")
set(LINK_WASM64 "-s MEMORY64=1 -sWASM_BIGINT=1 --profiling-funcs")
# Helper to avoid repetition
function(add_encoder target out_name use_threads use_wasm64)
add_executable(${target} ${SRC_LIST})
set_target_properties(${target} PROPERTIES OUTPUT_NAME "${out_name}" SUFFIX ".js")
target_include_directories(${target} PRIVATE ../../transcoder)
# Compile defs and options
target_compile_definitions(${target} PRIVATE ${COMMON_DEFS} ${CONFIG_DEFS})
target_compile_options(${target} PRIVATE -fno-strict-aliasing ${CONFIG_CFLAGS})
if(${use_threads})
target_compile_options(${target} PRIVATE -matomics -mbulk-memory)
target_compile_definitions(${target} PRIVATE WASM_THREADS_ENABLED=1)
endif()
if(${use_wasm64})
target_compile_options(${target} PRIVATE -s MEMORY64=1)
endif()
# Link flags (no generator expressions)
set(_lf "${LINK_BASE} ${CONFIG_LINK}")
if(${use_threads})
set(_lf "${_lf} ${LINK_THREADS}")
endif()
if(${use_wasm64})
set(_lf "${_lf} ${LINK_WASM64} -s INITIAL_MEMORY=1073741824 -s MAXIMUM_MEMORY=12884901888")
endif()
set_target_properties(${target} PROPERTIES LINK_FLAGS "${_lf}")
endfunction()
# The three outputs (names unchanged)
add_encoder(basis_encoder.js "basis_encoder" OFF OFF) # wasm32
add_encoder(basis_encoder_threads.js "basis_encoder_threads" ON OFF) # wasm32 + threads
add_encoder(basis_encoder_threads_wasm64.js "basis_encoder_threads_wasm64" ON ON ) # wasm64 + threads
endif()
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